nestjs-autoloader/dist/AutoloadModule.js

Module autoloading for NestJS

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.AutoloadModule = AutoloadModule;
const common_1 = require("@nestjs/common");
const constants_1 = require("@nestjs/common/constants");
const combine_1 = require("./combine");
const listFiles_1 = require("./listFiles");
const isScript_1 = require("./isScript");
const logger = new common_1.Logger('AutoloadModule');
function AutoloadModule(dirName, metadata) {
    return (target) => {
        log(`Autoloading module: ${dirName}`);
        const loaded = loadScripts(dirName);
        const combinedMeta = {
            ...metadata,
            controllers: (0, combine_1.combine)(metadata?.controllers, loaded.controllers),
            providers: (0, combine_1.combine)(metadata?.providers, loaded.providers),
        };
        (0, common_1.Module)(combinedMeta)(target);
    };
}
function loadScripts(dirName) {
    const scripts = (0, listFiles_1.listFiles)(dirName).filter(isScript_1.isScript);
    const result = {
        controllers: [],
        providers: [],
    };
    for (const script of scripts) {
        log(`Autoloading file: ${script}`);
        // Here we have to use require, to get the exports into a variable.
        // eslint-disable-next-line @typescript-eslint/no-require-imports
        const reqVals = Object.values(require(script));
        for (const check of reqVals) {
            if (typeof check === 'function') {
                if (isController(check)) {
                    log(`Found controller: ${check.name}`);
                    result.controllers.push(check);
                }
                if (isProvider(check)) {
                    log(`Found provider: ${check.name}`);
                    result.providers.push(check);
                }
            }
        }
    }
    return result;
}
function log(message) {
    if (common_1.Logger.isLevelEnabled('verbose')) {
        logger.verbose(message);
    }
}
function isController(fn) {
    return Reflect.hasMetadata(constants_1.CONTROLLER_WATERMARK, fn);
}
function isProvider(fn) {
    return Reflect.hasMetadata(constants_1.INJECTABLE_WATERMARK, fn);
}